A tennis player makes a successful first serve 90% of the time.Assume that each serve is independent of the others.If she serves 10 times,what is the probability that she misses for the first time on her second or fourth serve?
A)0.1
B)0.0066
C)0.1629
D)0.6
E)0.0101

Question

Quizplus · Accepted Answer

The probability of missing the first serve is 10%. The probability of missing the second serve is also 10%. The probability of missing the fourth serve is also 10%. The probability of missing the first time on the second or fourth serve is the sum of the probabilities of missing on the second and fourth serves, which is 10% + 10% = 20%.

A Tennis Player Makes a Successful First Serve 90% of the Time.Assume